Circle Radius from Circumference Reference Values
Calculate circle radius from circumference using r = C / (2π).
Table of Contents
Reference Value Index
This page lists 20 reference values for quick browsing and lookup.
All Reference Values
- 1 units = 0.159155 units
- 2 units = 0.31831 units
- 3.141593 units = 0.5 units
- 6.283185 units = 1 units
- 10 units = 1.591549 units
- 12.566371 units = 2 units
- 20 units = 3.183099 units
- 25 units = 3.978874 units
- 31.415927 units = 5 units
- 50 units = 7.957747 units
- 62.831853 units = 10 units
- 75 units = 11.936621 units
- 100 units = 15.915494 units
- 125 units = 19.894368 units
- 150 units = 23.873241 units
- 200 units = 31.830989 units
- 250 units = 39.788736 units
- 300 units = 47.746483 units
- 500 units = 79.577472 units
- 1,000 units = 159.154943 units
Reference Table
| Circumference | Radius |
|---|---|
| 1 units | 0.159155 units |
| 2 units | 0.31831 units |
| 3.141593 units | 0.5 units |
| 6.283185 units | 1 units |
| 10 units | 1.591549 units |
| 12.566371 units | 2 units |
| 20 units | 3.183099 units |
| 25 units | 3.978874 units |
| 31.415927 units | 5 units |
| 50 units | 7.957747 units |
| 62.831853 units | 10 units |
| 75 units | 11.936621 units |
| 100 units | 15.915494 units |
| 125 units | 19.894368 units |
| 150 units | 23.873241 units |
| 200 units | 31.830989 units |
| 250 units | 39.788736 units |
| 300 units | 47.746483 units |
| 500 units | 79.577472 units |
| 1,000 units | 159.154943 units |
Frequently Asked Questions
Frequently asked questions for Circle Radius from Circumference and its reference values.
What does the Circle Radius from Circumference calculator do?
It helps with recovering circle radius from measured perimeter length.
What formula does the Circle Radius from Circumference calculator use?
Circle radius = circumference / (2π).
What inputs are valid?
Circumference must be zero or greater. Physical values are typically positive.
When would I use this?
recovering circle radius from measured perimeter length
Methodology and Review
Each row on this page links to a value detail page derived from the same conversion data file as the main calculator and reference table. This reduces inconsistencies across page variants.
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